It has been fully adapted to support all the same languages as One Dark and the syntax has been revamped for easier customisation. Testing was done primarily on HTML, CSS (and pre-processors), PHP, JavaScript and C#.

Install

Install directly from Atom. Open Settings > Install, select Themes on the right and type quietude-syntax. Once downloaded, the theme will be available in Settings > Themes in the Syntax Themes dropdown menu.

Feedback

Feel free to reach out on twitter for any issue, or just to let me know what you think. I appreciate it!

I think this package is bad news.

Good catch. Let us know what about this package looks wrong to you, and we'll
investigate right away.